Improvement in fruit-jars



invited rne-ttt "siedi lling* L. B. OF PHILADELPHIA, PENN SYLVANIA'.

Letters-Patent No. 97 ,293, dated November 30,1869.

IMPROVEMENT IN FRUIT-JARS.

The Schedule referred to in these Letters Patent and making partl of thesame To all whom it may concern; v A Be it known that I, L. B.HARBERGER, of the city and county of Philadelphia, and State ofPennsylvania,

have invented 'a new and useful Improvement in Frnit- "the jar, inpartial section. l

This invention consists in the provision of inclined grooves in theinner face ofthe neck of the-jar, and in the peculiar construction ofacross-bar or key, the extremities of which tra-vel in the inclinedgrooves above referred to, while a projection at its centre presses onthe sheet-metal cover of the jar, and locks it in place, at the sametime compressing a rubber packing-ring placed beneath.

I will now proceed to describe my 'invention in def tail, as shown inthe drawings, in the two figures of which like pants are indicated vbysimilar letters'of reference.

In the inner face ofthe mouth A, of a fruit-jar, are

l'formed inclined planes or grooves, a a, represented by dotted lines infig.'1, and by full lines in tig. 2. These grooves can beeasily formedin the process of mannfacturing the jars. v e l At their elevated ends,these grooves terminate in vertical grooves or slots, b b, openV at thetop.

`cis a packing-ring of rubber, n 'h ich is placed on a shoulder, d,formed within the neck of the jar, just belowthe grooves a a.

On this ring rests the lid-or cover B, of sheet-metal,

gwhich I prefer to swage into the form shown, or any equivalent form,simply for the piirpose ofpreventing bending under the application ofthe locking-bar, to be hereinafter described.

It will be seen that the centre ofthe cap B is raised, and that itsouter portion is straight all around, where yit comes in contact withthe packing.

Thelocking cross-bar C will be 'made in the form described, and will beprobably of cast-metal.

This lock consists of arms j' f, which travel in the grooves c a, earsg` g, by`which it is turned', and aprojection, 7a., which, presses onthe' centre of the cap B.

The Inode of sealing this fruit-jar must be obvious, from the abovedescription of thedrawings. p

After the jar has been filled,lthe packing is first introduced, then thecap, and finally the locking-bar is fitted in,"itsarms f f entering theglcoves a (t by way -of the slots b b,- after which, by the applicationof' the thumb and nger, the bar C is turned' as far as desired, vtherebycompressing the packing, and securely fastening the cap, and brmingaperfectly air-tight joint.

It will be seen that `the projection of the lockingbar serves as'centreor pivot, cn which said bar is.

turned, and, as it presses directly on the centre of the cover, thepressure isequal all around.

I am aware that inclined projections have'been formed'on the upper sideof the oever, and the latter is tightened .by means of -a locking-bar,which moves in a circular groove in the neck oi' the jar, so as to rideover the inclined projections, and thereby tighten vthe cover; but insuch cases provision must be made to prevent the rotation of the cover.'Phe'.inventorot such devices states `that he forms lugs on theperiphery of the cover, so vthat the latter will remain stationary, andthereby allow the lockingbar to engage with' Vthe inclined projections.

`Should such lugs not exist, the cover will rotate with the bar, andthereby cannot be tightened on the jar; but by my invention, it islimmaterial whether the cover does or does not rotate. locking-'bar:move in theV Ainclined grooves,` and will surely press the coveito itsplace.

The ears formed on said barare sufficiently elevated toallow a firm holdtaken thereon, and the lower projection bears uniformly against thecentre of the cover.

I thereby produce a simple and practical invention.

Having thus described my invention,

What I claim as new, and desire to secure by Let.- y

ters Patent, is-

The,1ockingpiece, constructed with ears g g, and the centralbearing-projection h, in connection with lthe cover B and the inclinedgrooves a, in the inner face of the mouth or neck of a jar,substantially as and'for the purposev described. I

-To the above,'I have signed my name, this 28th day of September, 1869.

` L. B. HARBERGER.

Witnesses:

ROBERT HOMYER,

J OHN WAY.

The ends of the

